alexa Vincristine induced neurotoxicity in cancer patients.


Journal of Clinical Toxicology

Author(s): Gomber S, Dewan P, Chhonker D

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Abstract Ten out of 20 children, treated with usual doses of vincristine for various types of childhood cancers, developed neurotoxicity during treatment. Peripheral neurotoxicity (mixed motor-sensory 4/10, pure motor 3/10, pure sensory 3/10) was seen in the form of weakness of lower limbs, areflexia, neuropathic pain, or sensory loss. Autonomic neuropathy presented as constipation and urinary retention in 2 children, while 2 children developed encephalopathy in form of seizures, confusion, aphasia, and transient blindness. In children with severe neuropathy, vincristine administration was withheld/dose reduced till clinical improvement started, which took about 2-3 weeks time. Nerve conduction velocity showed motor-sensory axonal polyneuropathy. Electrophysiological abnormalities were found to persist even six months after clinical recovery in children with neurotoxicity. We found a relatively higher incidence of vincristine induced neuropathy in Indian children, which was probably due to coexistence of severe malnutrition in them. This article was published in Indian J Pediatr and referenced in Journal of Clinical Toxicology

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